Home / 665,049.66-917,439.69-392,985.93

Finding the Fourth Proportional to 665,049.66, 917,439.69 and 392,985.93

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Solution

The fourth proportional to 665,049.66, 917,439.69 and 392,985.93 is: 542,126.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,049.66 : 917,439.69 = 392,985.93 : x
  2. Step 2: Convert to fraction form
    665,049.66/917,439.69 = 392,985.93/x
  3. Step 3: Cross multiply
    665,049.66x = 917,439.69 × 392,985.93
  4. Step 4: Simplify right side
    665,049.66x = 360,540,889,793.56
  5. Step 5: Solve for x
    x = 360,540,889,793.56/665,049.66
  6. Step 6: Final answer
    x = 542,126.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.